Drive for matrix width indicator for composing machine perforators



J. BAUDER ETAL 3,043,500 DRIVE) FOR MATRIX WIDTH INDICATOR FOR COMPOSING MACHINE PERFORATORS July 10, 1962 2 Sheets-Sheet 1 Filed April 28, 1961 Fig.1

J. BAUDER ETAL 3,043,500 DRIVE FOR MATRIX WIDTH INDICATOR FOR COMPOSING MACHINE PERFORATORS Filed April 28, 1961 2 Sheets-Sheet 2 July 10, 1962 Fig.2 I

. I 1 H a i I m glmw q U 69 v @a Io i gulp 3 2o 21 Fig.3

. 3,043,590 D FOR MATRIX Wi'lTl-I INDICATQR FOR CGMPGSING MACHINE PERFORATORS Iosef Bauder, Munich-Selim, and Josef Fischer and Martin Aidn, Munich, Germany, assignors to Siemens & Halske Aktiengesellschaft, Munich, Germany, a corporation of Germany Filed Apr. 28, 1961, Ser. No. 106,268 Claims priority, application Germany May 9, 1960 4. Claims. (Cl. 234-4) This invention is concerned with drive devices for matrix width indicators customarily used in connection with perforators for composing machines. Such perforators serve in known manner for producing punched tape for the automatic control of composing machines. In the operation of such perforators, an indicator of the type referred. to is with each key' actuation in, known manner by a given amount shifted with respect to a multitude of permutation bars.

The object of the invention is to provide a stage-wise effective stop device which may be kept very small and which is reliable in operation as well as easily maintained and repaired.

This object is realized in connection with a known arrangement of key-controlled members which limit the motion of the indicator, by forming these members of a plurality of individual electromagnetically controlled pins which are journalled in bores of a block, and arranging the bores, with respect to the direction of motion of a feeler member which controls the indicator motion, in one or more step-like angularly extending rows.

in accordance with another feature of the invention, the pins constitute the armatures of electromagnets, the yokes of which form a block of magnetic material, and the bores in the block contain, in addition to the armature pins, the control windings of the electromagnets.

The electromagnet block is in a preferred embodiment exchangeably disposed.

In order to facilitate the operation and especially the shifting of the referred to indicator by different amounts, depending upon the selected kind of script, there may be inserted a crossbar contact distributor between the keyboard and the electromagnet block.

In accordance with still another feature of the invention, a particularly durable control device for the drive arrangement will be obtained by loosely coupling the respective armature pins with a plunger-like control pin of considerably larger diameter, which is operative as a limiting member.

Further details of the invention will appear from the explanations which are rendered below with reference to the accompanying drawings showing by way of example embodiments thereof.

FIG. 1 is a perspective part sectional view of a control device for stage-like adjustable stop members;

FIG. 2 is a front view of another embodiment; and

FIG. 3 is a sectional view taken along line 33 in FIG. 2.

The control device according to FIG. 1 comprises a massive block 1 made of magnetically well conductive material which is provided with 28 bores formed therein and extending horizontally therethrough, an armature 2 being disposed in each of these bores, provided with a non-magnetic pin 4 which is fixedly connected therewith and extends therefrom to the left. This pin serves as a stop for a member 10 which will be presently described. The respective bore in the block is in the rearward (right) portion considerably widened and contains the winding 5 of the electromagnet, the tubular part 1b remaining between the winding and pin 4 acting as a magnet core.

Near the right hand rear end of the magnet block 1, the r $43,560 Patented July 10, 1962 respective armatures are guided each by means of a nonmagnetic guide ring 6 which may be surrounded, if desired and spatially possible, by a further, not illustrated soft iron ring, for improving the magnetic flux. One of these rings is provided with bores formed therein for receiving the leads for the electromagnetic winding 5. For example, the switch 8 will be operatively actuated upon operation of a key (not shown), thereby causing, operative actuation of the electromagnet 5.

In the example shown in FIG. 1, the circuit for the winding 5 is closed, the armature 2 is accordingly attracted, and only the stop pin 4 projects with its frontal left end from the magnet block 1. A helical spring 9 acting as a restoring spring rests at one end against the winding 5 and at the other end against a flange 2a which is fixedly connected with the armature 2. The 28 bores are staggered so thata longitudinally vertically reciprocable feeler member 10 can move downwardly from its indicated normal position with uniformly stepped increments of motion, depending upon which of the pins, beginning at the upper left and continuing in each of the six rows from the left to the right, projects at any instant from the face 1a of the block 1. The motion of this member 10 is in suitable desired and known manner converted into a proportionally reduced motion of the indicator of an indicating device for the sum of the matrix width.

The device shown in FIGS. 2 and 3 operates in principle in a similar manner as the device according to FIG. 1, differing from the latter in structural details shown in the drawing. The magnet block 11 is provided with bores formed therein for the electromagnets, which bores are of uniform dimensions throughout. In each of the respective bores is disposed, as seen from left to right in FIG. 3, a soft iron core 13, a winding 15, an annular filler disk 16, a guide ring 17 which is at least in its inner portion non-magnetic, such guide ring serving for guiding the armature 12 which is disposed substantially within the winding 15 and such guide ring. The armature 12 is at its left end cone-shaped and provided with an extension 14 operating as a stop actuating pin. The core 13 is provided with a complementary conical bore. The magnet block 11 is at the right, as seen in FIG. 3, screw connected with a cover plate 18 which is provided with guide channels 19 formed therein for receiving the terminal leads, the plate 19 also forming a stop for the armature 12 in the normal position thereof. Another cover plate 20 is provided, shown at the left in FIG. 3 and frontally in FIG. 2, which is likewise screw connected with the magnet block 11, numeral 24 indicating a locating pin for facilitating the assembly of the plate 20 with the block 11. The plate 20 is provided with staggered bores formed therein, in number corresponding to the number of electromagnets and extending coaxial therewith, such bores containing respectively the plunger-like control members or stop pins 21 as well as restoring springs 22 embracing such pins. One end of each restoring spring engages the wall of the corresponding bore in the cover plate 20 (left end of the spring 22 in FIG. 3) and the opposite end thereof engages a flange of the plunger 21. These plungers are larger than the pins 14 respectively cooperating therewith and are, therefore, more resistant especially against lateral stresses. This is of particular importance in view of the small dimensions of the device such as illustrated in FIGS. 2 and 3 on a scale about twice the actual size thereof. Another advantage of this embodiment resides in the fact that the armatures cannot be stressed in any way, by the parts to be controlled, transverse to the direction of motion thereof. The part to be controlled may for example be a reciprocable feeler member 10 (shown in FIG. 1), omitted in 3 FIGS. 2 and 3, the stroke of which is to be limited by the action of stop members or plungers such as 21.

The electromagnet terminals are connected with a multiple plug in order to make the entire control device easily exchangeable, so as to, provide, for example, for removal thereof and exchange therefor, of another device with difierent control stages. A terminal strip 23 is shown in FIG. 2 to which the terminals are fixedly wired. Such terminal strip is connected over flexible lines with a multiple plug (not shown). Such plug can of course-be fastened at the magnet block. It is Within the scope of the invention possible to provide other feeler members for cooperation with the stop 'pins or stop plungers.

Changes may be made within the scope and spirit of the appended claims which define what is believed to be new and desired to have protected by Letters Patent.

We claim: p

1. A drive device for a matrix 'Width indicator for a composing machine perforator for control tape therefor,

comprising key controlled members for respectively limiting the motion of the indicator, said members being constructed in the form of a plurality of individual electromagnetically controlled'elernents including armatures of electromagnets, said armatures being journalled within bores formed in a block of magnetic material, said bores containing said armature elements and also the windings of the respective electromagnets and extending angularly in mutually staggered relation in one or more rows relative to the direction of motion of a feeler member which controls the motion of the indicator.

2. A drive device according to claim 1, wherein said electromagnet block is exchangeable.

3. A drive device according to claim 1, comprising a crossbar contact distributor disposed between the keyboard and the electromagnet arrangement.

4. A drive device according to claim 1, wherein said elements are armature elements of relatively small dimensions, and plunger-like control members of considerably larger dimensions loosely coupled with said elements and acting as limiting means for the motion of said indicator.

References Cited in the file of this patent UNITED STATES PATENTS 871,080 Bancroft Nov. 12, 1907 2,067,821 Bell Jan. 12, 1937 2,390,413 Ayres Dec. 4, 1945 2,816,609 Rossetto et al Dec. 17, 1957' 

